Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

Scientists discover asteroid spinning once every 1.88 minutes—the fastest rotation ever found for a large space rock. Five ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.

Scientists have discovered a “record-breaking” asteroid that is nearly the size of eight football fields. The object, known ...

In the vast calm of the solar system, planetary orbits often appear orderly, stable, and insulated from the broader mechanics ...

"Do we react for everything which has a chance to reach the ground? Or do we react only for the very large objects, as we did ...

There are about 15,000 satellites orbiting the Earth. Most of them, like the International Space Station and the Hubble ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

An international team of researchers pointed the largest single-dish radio telescope in the world at 3I/ATLAS.

The Saturn-sized celestial object is one of the clearest examples yet of a planet drifting through space without a host star.

After four centuries of advances, astronomers now capture the Sun’s swirling, dynamic features in stunning detail.